<template>
  <el-container class="home_container">
    <!-- 头部 -->
    <el-header>
      <div class="elHeader_left">
        <img src="../assets/ptwf.png" alt="" />
        <span>皮尔特沃夫管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 主题区域 -->
    <el-container>
      <!-- 左侧侧边栏 -->
      <el-aside :width="isCollapse ? '64px':'200px'">
          <div class="toggle_button" @click="toggleColapse">|||</div>
          <!-- 侧边栏菜单区域 -->
        <el-menu
          background-color="#eaedf1"
          text-color="#000"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active="activePath"
        >
          <!-- 一级菜单 -->
          <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
            <!-- 一级菜单的模板区 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName }}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item 
                :index=" '/' + subItem.path + ''" 
                v-for="subItem in item.children" 
                :key="subItem.id" 
                @click="saveNavState('/' + subItem.path + '')"
            >
              <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧内容 -->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
    data(){
        return{
            // 左侧菜单数据
            menulist:[],
            iconsObj:{
                '125' : 'iconfont icon-users',
                '103' : 'iconfont icon-tijikongjian',
                '101' : 'iconfont icon-shangpin',
                '102' : 'iconfont icon-danju',
                '145' : 'iconfont icon-baobiao'
            },
            // 是否折叠
            isCollapse:false,
            // 被激活的连接地址
            activePath : ''
        }
    },
    created(){
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods: {
        logout() {
        window.sessionStorage.clear();
        this.$router.push("/login");
        },
        // 获取所有的菜单
        async getMenuList(){
            const { data : res } = await this.$http.get('menus')
            if( res.meta.status !== 200 ){
                this.$message.error(res.meta.msg)
            }
            this.menulist = res.data
            // console.log(res)
        },
        // 点击按钮,切换菜单折叠与展开
        toggleColapse(){
            this.isCollapse = !this.isCollapse
        },
        // 保存连接的激活状态
        saveNavState(activePath){
            window.sessionStorage.setItem('activePath',activePath)
            this.activePath = activePath
        }
    },
};
</script>
